AbstractContainer::getFirst() - Code Metrics - Inspection of "Adding named method to Container" - libreworks/caridea-container - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( e5f1f2...99373d )

by Jonathan

created 2016-03-28 16:42 UTC

AbstractContainer::getFirst() B

↳ Parent: AbstractContainer

Complexity

Conditions	6
Paths	5

Size

Total Lines	10
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	10
rs	8.8571
cc	6
eloc	6
nc	5
nop	1

<?php
declare(strict_types=1);
/**
 * Caridea
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 *
 * @copyright 2015-2016 LibreWorks contributors
 * @license   http://opensource.org/licenses/Apache-2.0 Apache 2.0 License
 */
namespace Caridea\Container;

/**
 * Abstract dependency injection container.
 *
 * @copyright 2015-2016 LibreWorks contributors
 * @license   http://opensource.org/licenses/Apache-2.0 Apache 2.0 License
 */
abstract class AbstractContainer implements Container
{
    /**
     * @var Container The parent container
     */
    protected $parent;
    /**
     * @var string[] with string keys
     */
    protected $types = [];
    /**
     * @var string[] the list of PHP native types
     */
    protected static $primitives = ['array', 'bool', 'float', 'int', 'resource', 'string'];
    
    /**
     * Creates a new AbstractContainer.
     *
     * @param string[] $types with string keys
     * @param \Caridea\Container\Container $parent The parent container
     */
    protected function __construct(array $types, Container $parent = null)
    {
        $this->types = $types;
        $this->parent = $parent;
    }
    
    /**
     * Whether this container or its parent contains a component with the given name.
     *
     * @param string $name The component name
     * @return bool
     */
    public function contains(string $name): bool
    {
        return isset($this->types[$name]) ||
            ($this->parent ? $this->parent->contains($name) : false);
    }
    
    /**
     * Whether this container or its parent contains a component with the given type.
     *
     * @param string $type The name of a class or one of PHP's language types
     *     (i.e. bool, int, float, string, array, resource)
     * @return bool
     */
    public function containsType(string $type): bool
    {
        if ($type === null) {
            return false;
        }
        $isObject = !in_array($type, self::$primitives, true);
        foreach ($this->types as $ctype) {
            if ($type === $ctype || ($isObject && is_a($ctype, $type, true))) {
                return true;
            }
        }
        return $this->parent ? $this->parent->containsType($type) : false;
    }
    
    /**
     * Gets a component by name.
     *
     * If this container doesn't have a value for that name, it will delegate to
     * its parent.
     *
     * @param string $name The component name
     * @return mixed The component or null if the name isn't registered
     */
    public function get(string $name)
    {
        return isset($this->types[$name]) ? $this->doGet($name) :
            ($this->parent ? $this->parent->get($name) : null);
    }

    /**
     * Gets the components in the contanier for the given type.
     *
     * The parent container is called first, then any values of this container
     * are appended to the array. Values in this container supercede any with
     * duplicate names in the parent.
     *
     * @param string $type The name of a class or one of PHP's language types
     *     (i.e. bool, int, float, string, array, resource)
     * @return array keys are component names, values are components themselves
     */
    public function getByType(string $type): array
    {
        $components = $this->parent ? $this->parent->getByType($type) : [];
        $isObject = !in_array($type, self::$primitives, true);
        foreach ($this->types as $name => $ctype) {
            if ($type === $ctype || ($isObject && is_a($ctype, $type, true))) {
                $components[$name] = $this->doGet($name);
            }
        }
        return $components;
    }

    /**
     * Gets the first compenent found by type.
     *
     * If this container doesn't have a value of the type, it will delegate to
     * its parent.
     *
     * @param string $type The name of a class or one of PHP's language types
     *     (i.e. bool, int, float, string, array, resource)
     * @return mixed The component or null if one isn't registered
     */
    public function getFirst(string $type)
    {
        $isObject = !in_array($type, self::$primitives, true);
        foreach ($this->types as $name => $ctype) {
            if ($type === $ctype || ($isObject && is_a($ctype, $type, true))) {
                return $this->doGet($name);
            }
        }
        return $this->parent ? $this->parent->getFirst($type) : null;
    }

    /**
     * Retrieves the value
     *
     * @param string $name The value name
     */
    abstract protected function doGet(string $name);
    
    /**
     * Gets all registered component names (excluding any in the parent container).
     *
     * @return array of strings
     */
    public function getNames(): array
    {
        return array_keys($this->types);
    }

    /**
     * Gets the parent container.
     *
     * @return Container
     */
    public function getParent()
    {
        return $this->parent;
    }
    
    /**
     * Gets the type of component with the given name.
     *
     * If this container doesn't have a value for that name, it will delegate to
     * its parent.
     *
     * @param string $name The component name
     * @return string The component type, either a class name or one of PHP's language types
     *     (i.e. bool, int, float, string, array, resource)
     */
    public function getType(string $name)
    {
        return isset($this->types[$name]) ? $this->types[$name] :
            ($this->parent ? $this->parent->getType($name) : null);
    }

    /**
     * Gets a component by name and ensures its type.
     *
     * If this container doesn't have a value for that name, it will delegate to
     * its parent.
     * 
     * If the value isn't an instance of the type provided, an exception is
     * thrown, including when the value is `null`.
     *
     * @param string $name The component name
     * @param string $type The expected type
     * @return mixed The type-checked component
     * @throws \UnexpectedValueException if the `$type` doesn't match the value
     */
    public function named(string $name, string $type)
    {
        if (isset($this->types[$name])) {
            $ctype = $this->types[$name];
            $isObject = !in_array($type, self::$primitives, true);
            if ($type !== $ctype && (!$isObject || !is_a($ctype, $type, true))) {
                throw new \UnexpectedValueException("A $type was requested, but a $ctype was found");
            }
            return $this->doGet($name);
        } elseif ($this->parent !== null) {
            return $this->parent->named($name, $type);
        }
        throw new \UnexpectedValueException("A $type was requested, but null was found");
    }
}


1			<?php
2			declare(strict_types=1);
3			/**
4			* Caridea
5			*
6			* Licensed under the Apache License, Version 2.0 (the "License"); you may not
7			* use this file except in compliance with the License. You may obtain a copy of
8			* the License at
9			*
10			* http://www.apache.org/licenses/LICENSE-2.0
11			*
12			* Unless required by applicable law or agreed to in writing, software
13			* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
14			* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
15			* License for the specific language governing permissions and limitations under
16			* the License.
17			*
18			* @copyright 2015-2016 LibreWorks contributors
19			* @license http://opensource.org/licenses/Apache-2.0 Apache 2.0 License
20			*/
21			namespace Caridea\Container;
22
23			/**
24			* Abstract dependency injection container.
25			*
26			* @copyright 2015-2016 LibreWorks contributors
27			* @license http://opensource.org/licenses/Apache-2.0 Apache 2.0 License
28			*/
29			abstract class AbstractContainer implements Container
30			{
31			/**
32			* @var Container The parent container
33			*/
34			protected $parent;
35			/**
36			* @var string[] with string keys
37			*/
38			protected $types = [];
39			/**
40			* @var string[] the list of PHP native types
41			*/
42			protected static $primitives = ['array', 'bool', 'float', 'int', 'resource', 'string'];
43
44			/**
45			* Creates a new AbstractContainer.
46			*
47			* @param string[] $types with string keys
48			* @param \Caridea\Container\Container $parent The parent container
49			*/
50			protected function __construct(array $types, Container $parent = null)
51			{
52			$this->types = $types;
53			$this->parent = $parent;
54			}
55
56			/**
57			* Whether this container or its parent contains a component with the given name.
58			*
59			* @param string $name The component name
60			* @return bool
61			*/
62			public function contains(string $name): bool
63			{
64			return isset($this->types[$name]) \|\|
65			($this->parent ? $this->parent->contains($name) : false);
66			}
67
68			/**
69			* Whether this container or its parent contains a component with the given type.
70			*
71			* @param string $type The name of a class or one of PHP's language types
72			* (i.e. bool, int, float, string, array, resource)
73			* @return bool
74			*/
75			public function containsType(string $type): bool
76			{
77			if ($type === null) {
78			return false;
79			}
80			$isObject = !in_array($type, self::$primitives, true);
81			foreach ($this->types as $ctype) {
82			if ($type === $ctype \|\| ($isObject && is_a($ctype, $type, true))) {
83			return true;
84			}
85			}
86			return $this->parent ? $this->parent->containsType($type) : false;
87			}
88
89			/**
90			* Gets a component by name.
91			*
92			* If this container doesn't have a value for that name, it will delegate to
93			* its parent.
94			*
95			* @param string $name The component name
96			* @return mixed The component or null if the name isn't registered
97			*/
98			public function get(string $name)
99			{
100			return isset($this->types[$name]) ? $this->doGet($name) :
101			($this->parent ? $this->parent->get($name) : null);
102			}
103
104			/**
105			* Gets the components in the contanier for the given type.
106			*
107			* The parent container is called first, then any values of this container
108			* are appended to the array. Values in this container supercede any with
109			* duplicate names in the parent.
110			*
111			* @param string $type The name of a class or one of PHP's language types
112			* (i.e. bool, int, float, string, array, resource)
113			* @return array keys are component names, values are components themselves
114			*/
115			public function getByType(string $type): array
116			{
117			$components = $this->parent ? $this->parent->getByType($type) : [];
118			$isObject = !in_array($type, self::$primitives, true);
119			foreach ($this->types as $name => $ctype) {
120			if ($type === $ctype \|\| ($isObject && is_a($ctype, $type, true))) {
121			$components[$name] = $this->doGet($name);
122			}
123			}
124			return $components;
125			}
126
127			/**
128			* Gets the first compenent found by type.
129			*
130			* If this container doesn't have a value of the type, it will delegate to
131			* its parent.
132			*
133			* @param string $type The name of a class or one of PHP's language types
134			* (i.e. bool, int, float, string, array, resource)
135			* @return mixed The component or null if one isn't registered
136			*/
137			public function getFirst(string $type)
138			{
139			$isObject = !in_array($type, self::$primitives, true);
140			foreach ($this->types as $name => $ctype) {
141			if ($type === $ctype \|\| ($isObject && is_a($ctype, $type, true))) {
142			return $this->doGet($name);
143			}
144			}
145			return $this->parent ? $this->parent->getFirst($type) : null;
146			}
147
148			/**
149			* Retrieves the value
150			*
151			* @param string $name The value name
152			*/
153			abstract protected function doGet(string $name);
154
155			/**
156			* Gets all registered component names (excluding any in the parent container).
157			*
158			* @return array of strings
159			*/
160			public function getNames(): array
161			{
162			return array_keys($this->types);
163			}
164
165			/**
166			* Gets the parent container.
167			*
168			* @return Container
169			*/
170			public function getParent()
171			{
172			return $this->parent;
173			}
174
175			/**
176			* Gets the type of component with the given name.
177			*
178			* If this container doesn't have a value for that name, it will delegate to
179			* its parent.
180			*
181			* @param string $name The component name
182			* @return string The component type, either a class name or one of PHP's language types
183			* (i.e. bool, int, float, string, array, resource)
184			*/
185			public function getType(string $name)
186			{
187			return isset($this->types[$name]) ? $this->types[$name] :
188			($this->parent ? $this->parent->getType($name) : null);
189			}
190
191			/**
192			* Gets a component by name and ensures its type.
193			*
194			* If this container doesn't have a value for that name, it will delegate to
195			* its parent.
196			*
197			* If the value isn't an instance of the type provided, an exception is
198			* thrown, including when the value is `null`.
199			*
200			* @param string $name The component name
201			* @param string $type The expected type
202			* @return mixed The type-checked component
203			* @throws \UnexpectedValueException if the `$type` doesn't match the value
204			*/
205			public function named(string $name, string $type)
206			{
207			if (isset($this->types[$name])) {
208			$ctype = $this->types[$name];
209			$isObject = !in_array($type, self::$primitives, true);
210			if ($type !== $ctype && (!$isObject \|\| !is_a($ctype, $type, true))) {
211			throw new \UnexpectedValueException("A $type was requested, but a $ctype was found");
212			}
213			return $this->doGet($name);
214			} elseif ($this->parent !== null) {
215			return $this->parent->named($name, $type);
216			}
217			throw new \UnexpectedValueException("A $type was requested, but null was found");
218			}
219			}
220

libreworks / caridea-container

Push — master ( e5f1f2...99373d )

AbstractContainer::getFirst() B

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